Search for dissertations about: "friction coefficient"

Showing result 1 - 5 of 170 swedish dissertations containing the words friction coefficient.

2. 1. Gear tribology : friction and surface topography

   Author : Li Xiao; Bengt-Göran Rosén; Liam Blunt; Högskolan i Halmstad; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Friction; Surface topography; Toughness; Lay; Gears; Power transmission; TECHNOLOGY; TEKNIKVETENSKAP; surface topography; lay; toughness; power transmission; wfficiency; gears; friction;

   Abstract : The quest for energy efficiency leads to the development of highly efficient power transmissions for vehicles. Gears are some of the most rugged and durable torque transmitters among machine elements. Friction between sliding surfaces at gear teeth is one major source of power loss. READ MORE

4. 2. Tactile Perception : Role of Friction and Texture

   Author : Lisa Skedung; Mark Rutland; Siegfried Derler; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; SAMHÄLLSVETENSKAP; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; SOCIAL SCIENCES; human skin; tactile friction; finger friction; skin friction; skin tribology; biotribology; tactile perception; haptic perception; psychophysics; haptics; surface roughness; surface texture; contact area; nanostructure; model surfaces; surface wrinkling; printing paper; tissue paper; magnitude estimation; multidimensional scaling; tactile threshold; psychophysical relations; smoothness; coolness; coarseness; softness; force sensor; skin lipids; topical formulations; skin creams; taktil friktion; fingerfriktion; hudfriktion; hudtribologi; biotribologi; taktil perception; psykofysik; haptik; ytråhet; ytstruktur; ytveckning; nanostruktur; kontaktarea; modellytor; friktionskoefficient; kraftmätare; bestruket papper; obestruket papper; tryckpapper; mjukpapper; multidimensionell skalning; magnitud estimation; taktilt tröskelvärde; lenhet; mjukhet; svalhet; strävhet; hudlipider; topikala beredningar; hudkräm;

   Abstract : Tactile perception is considered an important contributor to the overall consumer experience of a product. However, what physical properties that create the specifics of tactile perception, are still not completely understood. READ MORE

5. 3. Surfaces Designed for High and Low Friction

   Author : Ulrika Pettersson; Staffan Jacobson; Roland Larsson; Uppsala universitet; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Materials science; tribology; friction; surface texture; surface design; low friction; high friction; boundary lubrication; DLC; embossing; Materialvetenskap; Materials science; Teknisk materialvetenskap;

   Abstract : This thesis comprises tribological studies of extremely well-defined surfaces of different designs. Both low-friction and high-friction surfaces were manufactured and experimentally evaluated.In the low-friction studies, lithography and anisotropic etching of silicon was first used as a texturing technique. READ MORE

6. 4. Friction in threaded fasteners : Influence of materials and tooling

   Author : Mayank Kumar; Sergei Glavatskih; Erik Persson; Ellen Bergseth; Ian Sherrington; Robert Wood; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction; Coating; Surface topography; Tightening speed; Additive manufacturing; Tightening condition; Assembly tool; Material; Friktion; Ytbehandling; Yttopografi; Åtdragningshastighet; Additiv tillverkning; Åtdragningsförhållanden; Monteringsverktyg; Material; Machine Design; Maskinkonstruktion;

   Abstract : Threaded fasteners represent the most common type of machine element, with a unique function that facilitates ease of assembly and disassembly. This ease of disassembly allows machine parts to be reused, refurbished, and recycled. READ MORE

7. 5. Tactile Perception - Role of Physical Properties

   Author : Lisa Skedung; Mark Rutland; Katrin Danerlöv; Sören Andersson; Ann Maria Cornell; KTH; []
   Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Finger Friction; Skin Friction; Paper Friction; Friction Coefficient; Piezoelectric Force Sensor; Skin Tribology; Biotribology; Soft Tribology; Surface Roughness; Profilometry; Coated Paper; Uncoated Paper; Printing Paper; Magazine Paper; Tactile Perception; Psychophysics; Multidimensional Scaling; Magnitude Estimation; Paper Coarseness; Thermal Conductivity; X-ray Photoelectron Spectroscopy.; Chemistry; Kemi;

   Abstract : The aim of this thesis is to interconnect human tactile perception with various physical properties of materials. Tactile perception necessitates contact and relative motion between the skin and the surfaces of interest. READ MORE